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Kevin Edmunds
Hong Kong Science &
Technology Parks Corporation
Science Park Phase 3 Innovation for Sustainable Design
Hong Kong Science Park
BEAM v4/04 “Excellent” Green 18 (2011)
BEAM Plus 1.2 “Gold” 20E, 22E (provisional, 2012)
Building 12W (2014): HK’s first LEED C&S v2009 “Platinum” office building
BEAM Plus 1.1 “Platinum” 12W, 15W, 16W (2015)
7 buildings (‘04-05): Wireless Centre Photonics Centre Enterprise Place
IC Development Centre Bio-informatics Centre Philips Electronics Blg SAE Technology Centre
HK-BEAM v1/99 (“Excellent”)
Presentation overview
16W
15W 12W
22E
20E
Back to
basics !!
Highlight the innovative energy
technologies at Phase 3:
• passive / climatic design
• high performance façades
• hybrid / natural ventilation
• ultra-efficient installations
• rainwater / waste recycling
• renewable energy installations
Zoom in to three specific “multi-
occupancy” applications:
• low-energy office provisions
• sub-metering of tenants energy
• “pay-per-use” air conditioning
Permeable, Climate Responsive Masterplan
Optimised separation for permeability
• orientation and separation enhance site permeability & ventilation
• microclimate design reduces ambient outdoor temperatures
• climate responsive massing & internal layout to reduce each
building’s solar footprint
• alignment with prevailing winds (average 1.5m/s predicted wind
speed at pedestrian level)
• Green Deck with tensile canopies enhance outdoor thermal
comfort; extensive landscaping and green roofs
• minimised daylight & wind impacts in the vicinity
Pedestrian bridges link all
Phase 3 buildings
The Green Podium Deck
(12W & 16W)
Extensive amenities for
collaboration
High performance façades
40% WWR; OTTV <12 W/m2 (50%
better than code)
Highly insulated spandrel panels (U
= 0.5 to 0.56W/m2K)
Spectrum selective double silver
low-E IGU (SC 0.29%, VLT 50%)
Insulated solid west façades
Sunshading / anti glare
Courtyard atria
Natural daylight
Green roofs and cool roofs
Annual peak cooling load reduction
Optimal orientation + shading 3%
+ solid west façade 5%
+ high performance low-E IGU 10%
Hybrid / natural ventilation to G/F & 1/F lobbies
Solar-cooled
water curtain
(absorption chiller) Large ceiling fans
Openable façade
windows to foyers
Solar tracking louvres
(BMS control)
Renewable energy
Solar hot water (absorption
chiller / solar cooling wall)
Thin film PV on tensile
structures
Solar Tubes (natural sunlight
into car park)
Hybrid solar / wind powered
street lights (Phase 3c)
12W: 218x mono-crystalline PV panels, 355m2 surface area, 69.3 kWp installed capacity, ~ 4,000 kWh/month (>1% total landlord consumption)
Ultra-efficient HVAC District Cooling System (DCS) extended from Phase 2 to Phase 3 enhances load management CO2 controlled demand
ventilation (excl. retail & labs)
Air-side heat recovery (thermal
wheels) & free cooling
OFC serves AHUs to decouple
sensible & latent heat loads
PCM thermal storage reduces
peak loads the next day
Integrated chilled beams (CMO)
Recycling rain water & waste Automatic Refuse Collection System (ARCs), efficient, hygienic 1,100m3 rainwater /
condensate harvesting
2,000 sqft organic “Green Pad”
EV charging
(all 350 spaces) Regenerative braking,
group selective control lifts
Nat Vent & Daylit
Carpark
Pedestrian
linked bridges
Facilities for
cyclists
Transport innovations
218 photovoltaic panels
Interactive
“totems”
Education & engagement
Low-energy office design
Natural Ventilation Operable Vents
Hybrid / natural ventilation
• motorised “push button”
operable windows in all offices
• 500mm upper and lower vents
open in four steps (25% to 100%)
• BMS override during hot, humid,
inclement weather, etc
• 510 office hours of cross-vent
potential (~10% of the year)
• 205 office hours of single-sided
NV potential (~4% of the year)
Low energy lighting:
• base 300 lux (excl. labs) can be
turned up to 400 lux (task lights for
500 lux where needed)
• average 7% daylight factor calculated
for typical open plan offices
• “CREE” LED lighting to all R&D offices,
installed LPD around 6 to 7 W/m2
• automatic daylight (perimeter) and
occupancy controls
“Pay-per-use” air conditioning
Multiple AHU (typically 4 nos. per
floor)
Multiple AHUs (typically 4 nos per floor)
• enables AC energy costs to be decoupled from
management fees (thermal flow & power meters)
• “pay-per-use” air-conditioning provides greater individual
tenant control & rewards conservation
• also enhances part load efficiencies
Tenant sub-metering
The “EPMS” ENERGY PERFORMANCE MONITORING SYSTEM
A powerful data collection, analytics & graphical
interface that provides: *
For the public: key indicators of each buildings overall
performance (both landlord facilities and tenants
premises)
• energy conserved (HVAC, lighting, etc)
• renewable energy generated
• rain water / condensate collected for recycling
• overall reductions in CO2 equivalent
• each month’s “star tenants”
For the tenants: a private secure webpage to monitor
their own energy profiles
• small power electricity
• lighting electricity
• HVAC electricity
* Contingent on each tenants’ installation of a sub-
meter in their premises for data sharing with the
centralised BMS (a “Green Lease” requirement)